Question

colour of iron nail before the experiment​

Answer 1

Answer:

The initial blue colour of copper sulphate solution is changed to light green colour of iron sulphate. 2) The initial silver colour of iron nail is changed to reddish-brown colour due to coating of copper metal on the nail

Answer 2

Answer:

because without colouring the iron nails will rusted. so before experiments colour the nail.

please mark it as breanlyeast